1. Support GSM850/900/1800/1900 MHz.can work around the globe. 2.Japan, JRC GPS chipset, high sensitivity; has passed the certification number of famous Japanese Depot. 3. To support a single location and continuous tracking. 4. Support alarm, preset 3 phone number. 5. To support inquiries via SMS or the Internet or real-time and historical location information trajectory. 6. SOS button The exact location information sent once the rescue / action to support the electronic fence set up one or more. 7. To support oil power off function and power off the oil recovery; ACC open instant notification feature (optional). 8. The power cord had been cut with automatic instant message alarm function.